Signed-off-by: Benny Halevy <bhalevy@xxxxxxxxxx>
---
fs/nfsd/nfs4proc.c | 3 ---
fs/nfsd/nfs4state.c | 6 +++---
fs/nfsd/nfs4xdr.c | 19 +++++++++++++++----
fs/nfsd/xdr4.h | 6 ++++--
4 files changed, 22 insertions(+), 12 deletions(-)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 896da74..a9040be 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -310,9 +310,6 @@ static __be32 nfsd_check_obj_isreg(struct svc_fh *fh)
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
- /* We don't yet support WANT bits: */
- open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
-
open->op_created = 0;
/*
* RFC5661 18.51.3
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index a6cdbd5..c165df7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2633,8 +2633,6 @@ static __be32 nfsd4_check_seqid(struct nfsd4_compound_state *cstate, struct nfs4
static int share_access_to_flags(u32 share_access)
{
- share_access &= NFS4_SHARE_ACCESS_MASK;
-
return share_access == NFS4_SHARE_ACCESS_READ ? RD_STATE : WR_STATE;
}
@@ -3596,7 +3594,9 @@ static inline void nfs4_stateid_downgrade(struct nfs4_ol_stateid *stp, u32 to_ac
cstate->current_fh.fh_dentry->d_name.name);
/* We don't yet support WANT bits: */
- od->od_share_access &= NFS4_SHARE_ACCESS_MASK;
+ if (od->od_deleg_want)
+ dprintk("NFSD: %s: od_deleg_want=0x%x ignored\n", __func__,
+ od->od_deleg_want);
nfs4_lock_state();
status = nfs4_preprocess_confirmed_seqid_op(cstate, od->od_seqid,
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 0ec5a1b..78d2bb8 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -638,14 +638,18 @@ static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp,
DECODE_TAIL;
}
-static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x)
+static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when)
{
__be32 *p;
u32 w;
READ_BUF(4);
READ32(w);
- *x = w;
+ *share_access = w & NFS4_SHARE_ACCESS_MASK;
+ *deleg_want = w & NFS4_SHARE_WANT_MASK;
+ if (deleg_when)
+ *deleg_when = w & NFS4_SHARE_WHEN_MASK;
+
switch (w & NFS4_SHARE_ACCESS_MASK) {
case NFS4_SHARE_ACCESS_READ:
case NFS4_SHARE_ACCESS_WRITE:
@@ -673,6 +677,9 @@ static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *x)
w &= ~NFS4_SHARE_WANT_MASK;
if (!w)
return nfs_ok;
+
+ if (!deleg_when) /* open_downgrade */
+ return nfserr_inval;
switch (w) {
case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL:
case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED:
@@ -719,6 +726,7 @@ static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_ne
nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)
{
DECODE_HEAD;
+ u32 dummy;
memset(open->op_bmval, 0, sizeof(open->op_bmval));
open->op_iattr.ia_valid = 0;
@@ -727,7 +735,9 @@ static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_ne
/* seqid, share_access, share_deny, clientid, ownerlen */
READ_BUF(4);
READ32(open->op_seqid);
- status = nfsd4_decode_share_access(argp, &open->op_share_access);
+ /* decode, yet ignore deleg_when until supported */
+ status = nfsd4_decode_share_access(argp, &open->op_share_access,
+ &open->op_deleg_want, &dummy);
if (status)
goto xdr_error;
status = nfsd4_decode_share_deny(argp, &open->op_share_deny);
@@ -848,7 +858,8 @@ static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_ne
return status;
READ_BUF(4);
READ32(open_down->od_seqid);
- status = nfsd4_decode_share_access(argp, &open_down->od_share_access);
+ status = nfsd4_decode_share_access(argp, &open_down->od_share_access,
+ &open_down->od_deleg_want, NULL);
if (status)
return status;
status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny);
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 2364747..1771a91 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -222,6 +222,7 @@ struct nfsd4_open {
u32 op_seqid; /* request */
u32 op_share_access; /* request */
u32 op_share_deny; /* request */
+ u32 op_deleg_want; /* request */
stateid_t op_stateid; /* response */
u32 op_recall; /* recall */
struct nfsd4_change_info op_cinfo; /* response */
@@ -245,8 +246,9 @@ struct nfsd4_open_confirm {
struct nfsd4_open_downgrade {
stateid_t od_stateid;
u32 od_seqid;
- u32 od_share_access;
- u32 od_share_deny;
+ u32 od_share_access; /* request */
+ u32 od_deleg_want; /* request */
+ u32 od_share_deny; /* request */
};
--
1.7.6.5
--
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